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本文针对河北省黑龙港地区干旱缺水的问题,探讨了在该地区发展小麦棉花地膜覆盖及实行低定额灌水的节水措施和效果;提出在节水灌溉条件下,小麦和棉花全生育期可节省灌水1～2次。本文具体介绍了小麦越冬地膜覆盖,揭下地膜再盖棉花,即所谓“一膜两用”的节水措施,这种措施提高了地膜的利用率,节水增产效果显著,麦棉两季纯增收达75元/亩。
In this paper, aiming at the problem of drought and water shortage in Heilonggang area of Hebei Province, the paper discussed the development of water-saving measures and effect of cotton mulching and low-fixed-rate irrigation in this area. It is proposed that under the condition of water-saving irrigation, the whole growth period of wheat and cotton Save irrigation 1 or 2 times. This paper specifically introduced the winter overwhelming plastic film mulching, remove the plastic film and then cover the cotton, the so-called “a film dual-use” water-saving measures, which measures to improve the utilization of plastic film, water and yield a significant effect, Up to 75 yuan / mu.